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Discrepancy of neural response between exogenous and endogenous task switching : an event-related potentials study
| Title: | Discrepancy of neural response between exogenous and endogenous task switching : an event-related potentials study |
| Authors: | Miyajima, Maki Browse this author | | Toyomaki, Atsuhito Browse this author →KAKEN DB | | Hashimoto, Naoki Browse this author | | Kusumi, Ichiro Browse this author →KAKEN DB | | Murohashi, Harumitsu Browse this author →KAKEN DB | | Koyama, Tsukasa Browse this author →KAKEN DB |
| Keywords: | cognitive control | | endogenous rule shifting | | event-related potentials (ERPs) | | executive function | | exogenous rule shifting | | task switching |
| Issue Date: | 1-Aug-2012 |
| Publisher: | Lippincott Williams & Wilkins |
| Journal Title: | Neuroreport |
| Volume: | 23 |
| Issue: | 11 |
| Start Page: | 642 |
| End Page: | 646 |
| Publisher DOI: | 10.1097/WNR.0b013e328354b066 |
| PMID: | 22713928 |
| Abstract: | Task switching is a well-known cognitive paradigm to explore task-set reconfiguration processes such as rule shifting. In particular, endogenous task switching is thought to differ qualitatively from stimulus-triggered exogenous task switching. However, no previous study has examined the neural substrate of endogenous task switching. The purpose of the present study is to explore the differences between event-related potential responses to exogenous and endogenous rule switching at cue stimulus. We modified two patterns of cued switching tasks: exogenous (bottom-up) rule switching and endogenous (top-down) rule switching. In each task cue stimulus was configured in order to induce switching or maintaining rule. In exogenous switching tasks, late positive deflection was larger in the switch rule condition than in the maintain rule condition. However, in endogenous switching tasks late positive deflection was unexpectedly larger in the maintain rule condition than in the switch-rule condition. These results indicate that exogenous rule switching is explicit stimulus-driven processes whereas endogenous rule switching is implicitly parallel processes independent of external stimulus. |
| Rights: | This is a non-final version of an article published in final form in Neuroreport, 23(11), 642-646, 1 Aug. 2012 |
| Relation: | http://journals.lww.com/neuroreport/pages/default.aspx |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/53011 |
| Appears in Collections: | 医学院・医学研究院 (Graduate School of Medicine / Faculty of Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 豊巻 敦人
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